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Java Source Code / Java Documentation » GIS » udig 1.1 » net.refractions.udig.project.internal.render

Source Cross Reference

Class Diagram

Java Document (Java Doc)

net.refractions.udig.project.internal.render .ViewportModel

All known Subclasses:   net.refractions.udig.project.internal.render.impl .ViewportModelImpl,
ViewportModel
public interface ViewportModel extends EObject,IMapDisplayListener,IViewportModel(Code)
TODO Purpose of net.refractions.udig.project.internal.render

author:
   Jesse
since:
   1.0.0

Field Summary
final public static CoordinateReferenceSystem DEFAULT_CRS
     A Default setting to use for the viewport CRS.
final public static Envelope NIL_BBOX
     A Default setting to use for the viewport screen size.
String copyright


Method Summary
public double getAspectRatio()
     Returns the aspect ratio of the viewport.
public Envelope getBounds()
     Returns the bounding box of the Viewport in world coordinates.
Note: Since Envelope is not a UDIG element changes to the bounds envelope object will not raise events.
public CoordinateReferenceSystem getCRS()
     Returns the local coordinate system.
public Coordinate getCenter()
     Returns the center of the viewport in world coordinates.
public double getHeight()
     Returns the Viewport's height in world coordinates.
public Map getMapInternal()

public Coordinate getPixelSize()
     Returns the size of a pixel in world units.
For example if the world is in WGS 84(lat long) then the size will be in degrees
the size of a pixel in world units.
RenderManager getRenderManagerInternal()
     Returns the value of the 'Render Manager Internal' reference.
public double getWidth()
     Returns the Viewport's width in world coordinates.
public boolean isInitialized()
     Return true if it has been initialized with a display.
boolean isSetCRS()
     Returns whether the value of the ' net.refractions.udig.project.internal.render.ViewportModel.getCRS CRS ' attribute is set.
public ViewportModel panUsingScreenCoords(int xpixels, int ypixels)
     Pans the viewport in terms of pixels on the screen.
public ViewportModel panUsingWorldCoords(double x, double y)
     Pans the viewport in terms of world units.
public Coordinate pixelToWorld(int x, int y)

void setBounds(Envelope value)
     Sets the value of the ' net.refractions.udig.project.internal.render.ViewportModel.getBounds Bounds ' attribute.
public void setBounds(double minx, double maxx, double miny, double maxy)
     Sets the viewport's bounding box.
void setCRS(CoordinateReferenceSystem value)
     Sets the value of the ' net.refractions.udig.project.internal.render.ViewportModel.getCRS CRS ' attribute.
void setCenter(Coordinate value)
     Sets the value of the ' net.refractions.udig.project.internal.render.ViewportModel.getCenter Center ' attribute.
void setHeight(double value)
     Sets the value of the ' net.refractions.udig.project.internal.render.ViewportModel.getHeight Height ' attribute.
public void setInitialized(boolean initialized)
     Sets the initialized state of ViewportModel.
void setMapInternal(Map value)
     Sets the value of the ' net.refractions.udig.project.internal.render.ViewportModel.getMapInternal Map Internal ' container reference.
void setRenderManagerInternal(RenderManager value)
     Sets the value of the ' net.refractions.udig.project.internal.render.ViewportModel.getRenderManagerInternal Render Manager Internal ' reference.
public void setScale(double scaleDenominator)

void setWidth(double value)
     Sets the value of the ' net.refractions.udig.project.internal.render.ViewportModel.getWidth Width ' attribute.
void unsetCRS()
     Unsets the value of the ' net.refractions.udig.project.internal.render.ViewportModel.getCRS CRS ' attribute.
public Point worldToPixel(Coordinate coord)
     Returns the pixel on the screen for a given coordinate in world space.
Parameters:
  coord - A coordinate in world space.
public AffineTransform worldToScreenTransform()
     Gets up the affine transform that will transform from the world to screen.
public ViewportModel zoom(double zoom)
     Increases or decreases the size of the viewport(in world space) by a constant factor, zoom. The zoom is equal in both directions.
public void zoomToBox(Envelope box)

public void zoomToExtent()


Field Detail
DEFAULT_CRS
final public static CoordinateReferenceSystem DEFAULT_CRS(Code)
A Default setting to use for the viewport CRS.

NIL_BBOX
final public static Envelope NIL_BBOX(Code)
A Default setting to use for the viewport screen size.

copyright
String copyright(Code)

Method Detail
getAspectRatio
public double getAspectRatio()(Code)
Returns the aspect ratio of the viewport. The aspect ratio of the viewport.

getBounds
public Envelope getBounds()(Code)
Returns the bounding box of the Viewport in world coordinates.
Note: Since Envelope is not a UDIG element changes to the bounds envelope object will not raise events. Therefore the bounds should only be modified via the ViewportModel interface
the bounding box of the Viewport in world coordinates.

getCRS
public CoordinateReferenceSystem getCRS()(Code)
Returns the local coordinate system. The local coordinate system is the CRS that all the layer data will be transformed into. Once the layer data is transformed into the local CRS then it is transformed for display onto the screen the local coordinate system

getCenter
public Coordinate getCenter()(Code)
Returns the center of the viewport in world coordinates. the center of the viewport in world coordinates

getHeight
public double getHeight()(Code)
Returns the Viewport's height in world coordinates. the Viewport's height in world coordinates.

getMapInternal
public Map getMapInternal()(Code)
Gets the Map that contains the current ViewportModel the Map that contains the current ViewportModel

getPixelSize
public Coordinate getPixelSize()(Code)
Returns the size of a pixel in world units.
For example if the world is in WGS 84(lat long) then the size will be in degrees
the size of a pixel in world units.

getRenderManagerInternal
RenderManager getRenderManagerInternal()(Code)
Returns the value of the 'Render Manager Internal' reference. It is bidirectional and its opposite is ' net.refractions.udig.project.internal.render.RenderManager.getViewportModelInternal Viewport Model Internal '.
If the meaning of the 'Render Manager' reference isn't clear, there really should be more of a description here...
the value of the 'Render Manager Internal' reference.
See Also:   ViewportModel.setRenderManagerInternal(RenderManager)
See Also:   net.refractions.udig.project.internal.render.RenderPackage.getViewportModel_RenderManagerInternal
See Also:   net.refractions.udig.project.internal.render.RenderManager.getViewportModelInternal

getWidth
public double getWidth()(Code)
Returns the Viewport's width in world coordinates. the Viewport's width in world coordinates.

isInitialized
public boolean isInitialized()(Code)
Return true if it has been initialized with a display. If no display is active then the viewportmodel is not initialized. true if it has been initialized with a display

isSetCRS
boolean isSetCRS()(Code)
Returns whether the value of the ' net.refractions.udig.project.internal.render.ViewportModel.getCRS CRS ' attribute is set. whether the value of the 'CRS' attribute is set.
See Also:   ViewportModel.unsetCRS()
See Also:   ViewportModel.getCRS()
See Also:   ViewportModel.setCRS(CoordinateReferenceSystem)

panUsingScreenCoords
public ViewportModel panUsingScreenCoords(int xpixels, int ypixels)(Code)
Pans the viewport in terms of pixels on the screen. Each pixel represents a distance in world coordinates, the x and y distances differ, so a pan of 8 pixels in the x direction will be translated to a pan of 8*xdistance in the world.
Parameters:
  xpixels - The amount to pan in the x direction
Parameters:
  ypixels - The amount to pan in the y direction this ViewportModel

panUsingWorldCoords
public ViewportModel panUsingWorldCoords(double x, double y)(Code)
Pans the viewport in terms of world units.
Parameters:
  x - The amount to pan in the x direction
Parameters:
  y - The amount to pan in the y direction this ViewportModel

pixelToWorld
public Coordinate pixelToWorld(int x, int y)(Code)
Converts a coordinate expressed on the device space back to real world coordinates
Parameters:
  x - horizontal coordinate on device space
Parameters:
  y - vertical coordinate on device space The correspondent real world coordinate

setBounds
void setBounds(Envelope value)(Code)
Sets the value of the ' net.refractions.udig.project.internal.render.ViewportModel.getBounds Bounds ' attribute.
The bbox must have a positive width and height and must have a aspect ratio within 0.0000001 units of the value returned by .

It is recommended that setHeight() or setWidth() methods are used since they preserve the aspect ratio of the Viewport

Parameters:
  value - the new value of the 'Bounds' attribute.
See Also:   ViewportModel.getBounds()

setBounds
public void setBounds(double minx, double maxx, double miny, double maxy) throws IllegalArgumentException(Code)
Sets the viewport's bounding box. The bounding box will be fit to the window based on the MapDisplay so the bounds provided here may not be the final bounds.
Parameters:
  minx - the minimum x value of the new bounding box.
Parameters:
  maxx - the maximum x value of the new bounding box.
Parameters:
  miny - the minimum y value of the new bounding box.
Parameters:
  maxy - the maximum x value of the new bounding box.
throws:
  IllegalArgumentException - If the above criteria are not met this exception is thrown.

setCRS
void setCRS(CoordinateReferenceSystem value)(Code)
Sets the value of the ' net.refractions.udig.project.internal.render.ViewportModel.getCRS CRS ' attribute.
Parameters:
  value - the new value of the 'CRS' attribute.
See Also:   ViewportModel.isSetCRS()
See Also:   ViewportModel.unsetCRS()
See Also:   ViewportModel.getCRS()

setCenter
void setCenter(Coordinate value)(Code)
Sets the value of the ' net.refractions.udig.project.internal.render.ViewportModel.getCenter Center ' attribute.
Parameters:
  value - the new value of the 'Center' attribute.
See Also:   ViewportModel.getCenter()

setHeight
void setHeight(double value)(Code)
Sets the value of the ' net.refractions.udig.project.internal.render.ViewportModel.getHeight Height ' attribute.
Parameters:
  value - the new value of the 'Height' attribute.
See Also:   ViewportModel.getHeight()

setInitialized
public void setInitialized(boolean initialized)(Code)
Sets the initialized state of ViewportModel.
Parameters:
  initialized -

setMapInternal
void setMapInternal(Map value)(Code)
Sets the value of the ' net.refractions.udig.project.internal.render.ViewportModel.getMapInternal Map Internal ' container reference.
Parameters:
  value - the new value of the 'Map Internal' container reference.
See Also:   ViewportModel.getMapInternal()

setRenderManagerInternal
void setRenderManagerInternal(RenderManager value)(Code)
Sets the value of the ' net.refractions.udig.project.internal.render.ViewportModel.getRenderManagerInternal Render Manager Internal ' reference.
Parameters:
  value - the new value of the 'Render Manager Internal' reference.
See Also:   ViewportModel.getRenderManagerInternal()

setScale
public void setScale(double scaleDenominator)(Code)
Sets the zoom level of the viewport so that the scale denominator will be equal to scale
Parameters:
  scaleDenominator - desired scale denominator

setWidth
void setWidth(double value)(Code)
Sets the value of the ' net.refractions.udig.project.internal.render.ViewportModel.getWidth Width ' attribute.
Parameters:
  value - the new value of the 'Width' attribute.
See Also:   ViewportModel.getWidth()

unsetCRS
void unsetCRS()(Code)
Unsets the value of the ' net.refractions.udig.project.internal.render.ViewportModel.getCRS CRS ' attribute.
See Also:   ViewportModel.isSetCRS()
See Also:   ViewportModel.getCRS()
See Also:   ViewportModel.setCRS(CoordinateReferenceSystem)

worldToPixel
public Point worldToPixel(Coordinate coord)(Code)
Returns the pixel on the screen for a given coordinate in world space.
Parameters:
  coord - A coordinate in world space. The pixel on the screen that the world coordinate is drawn on.

worldToScreenTransform
public AffineTransform worldToScreenTransform()(Code)
Gets up the affine transform that will transform from the world to screen. A convenience method. a transform that maps from real world coordinates to the screen

zoom
public ViewportModel zoom(double zoom)(Code)
Increases or decreases the size of the viewport(in world space) by a constant factor, zoom. The zoom is equal in both directions. The function used is: bbox.height=bbox.height/divisor bbox.width=bbox.width/divisor

A zoom must be greater than 1.

A zoom greater than 1 is a zoom towards the map(Feature appear larger.)

A zoom less than 1 is a zoom away from the map

Parameters:
  zoom - the zoom factor This ViewportModel, allows for command chaining.

zoomToBox
public void zoomToBox(Envelope box)(Code)
sets the Viewport bounding box so that it contains the new box

zoomToExtent
public void zoomToExtent()(Code)
sets the Viewport bounding box so that it fully contains the visible map extent

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